Stone breaking and crushing machine



(No Model.)

R. D. GATES. STONE BREAKING AND'GEUSHING MACHINE. No. 251,038.

Patented Deo. 20,1881.

PATENT .erica RYERSON D. GATES, :OF CHICAGO, ILLINOlS.

STONE BREAKING AND CRUSHING MACHINE.

SPECIFICATION forming part of Letters Patent Ne. 251,038, aerea December2o, 1881.

Application tiled August 1G, 1881. (No model.)

To all whom tt may concern:

Beit known that I, RYERsoN D. Gn'rnsa citizen of the United States,residing at Oliicago, in the county of Cook and State of Illinois, haveinvented anew and useful Improvenient inStone Breaking and CrushingMachines, of which the flllowing is a specification.

My invention relates especially to the stone breaking and crushingmachine patented by I. NV. Gates June 28, 1881, No. 243,545; but it maybe used in connection with all other similar machines having a shaftwith a crushinge particles of stone, dust, ber provided with head abovethe gearing, and an oil step bearing-box below said crushing-head; andthe object ofmy invention is to trap and confine small or dirt within achama sponge, cotton, or other analogous soft arresting material,whereby the passage of such dust or dirt down upon the gearing and intothe oil vstep beating-box is effectually prevented, and thus` undue wearfrom friction upon the shalt andthe gearing and bearing is avoided.

In the accompanying drawings, Figure l -shows a portion of astone-breaking machine similar to the aforesaid I?. W. Gatess patentedmachine, and with my improvement applied thereto. The view is averticallongitudinal section through the center of the machine. Fig. 2shows a detail horizontal section in the line :r x of Fig. l, and Fig. 3is a detail vertical section of a modied form of construction of mymachine. Y

A represents the fraine of a stone-breaker; B, the concave or hopper; C,a gyrating shaft; E, the Crusher-head; E', the diaphragm or chute of theframe, this latter being, as usual, formed with a tubular ange, e, onits upper side, as shown.

F is the loose dust-guard collar or ring, f1tted loosely around theshaft C, and surmounting the tubular flange c in a manner to move backand forth on said flange, while the shaft gyrates and revolves withinthe bore of the collar or ring.

G is the oil step bearing-box. H is the adjustable screw thereof 5 I, aneccentric bearing for the lower end of the shaft C; J, a bevelgear Wheelattached fast to the eccentric bearing I; and K. is a bevelgear on thedrivingshaft of theinachine.

L is a circular collar, ot tapering form, fitted loosely around theshalt C and resting loosely upon the bevel-wheel J. This collar isprovided with a passage, s, over which a cover may be placed, andthrough the passage oil is snpplied from an oil-can to the oil step-box.The collar L may be termed a hoo-l, as it also serves as a dust-guard.

M and N are guard-flanges, for preventing the waste of oil; and mv arechannels or passages for the circulation of oil through the stepbearing-box G.

O is the ball on the upper end of the shaft C, and Pis the adjustablebearing for said ball. This bearing, as usual, may be made of chilledmetal, forming segments ot' a cylinder externally and of a hollow sphereinternally.

The machine thus far described and shown my invention.

'dust-guard collar or ring F to a very great extent prevents the passagedownward of tine particles of broken stone and dust; but owing to thebore of said collar or ring requiring to be made a full onethirty-second part ot' an inch larger in diameter than that part of theshaft which it encircles, in order to have it gyrate with the shaftwithout binding, the dust will sift down through the tubular flange eupon the gearing, and into the oil step bearingboX, and form, with theoil, a gritty mass, which soon Wears out the gearing and bearing. Toobviate this difficulty l provide a chamber, Q, of tubular form, on theunder side ot' the diaphragm or chute E', as shown in the drawings. Thischamber has an annular passage, q, in its bottom, and it is fully openat its top, and the diameter of this chamber is about the same as thatof the one formed by the tubular flange e. The annular passa-ge q is ofa diameter greater than the lower end of the shaft C, in order that saidshaft, which passes through this passage, may have freedom to gyrate.

Upon the bottom of the chamber Q an annular loose ring or collar, R, isplaced, and through this ring or collar the lower' and smaller end l ofthe shaft C passes, as shown. The ring or is well known, and of itselfforms no part of With-the machine as above described the.

IOO

collar R is to serve a similar purpose as the ring or collar F, and itsbore requires to be of larger diameter than that part of the shaft whichit encircles, for reasons above stated with respect to the collar orring F.

S is an opening, with a suitable cover or plug for closing it, in oneside of the chamber Q. The chamber Q is provided with bolting-iianges tb, and by means of these iianges and bolts c it is firmly fastened tothe under side ot" the diaphragm or chute E', and thus applied itlforms, with the tubular liange e, a cylindrical chamber or trap, d,between the loose collars or rings F and It.

Through the opening Ssponge, cottoinwaste, or other soft trappingmaterial is placed in the chamber d, and this material g serves as ameans for arresting the dust which may filter down upon it between theshaft C and the collar or ring F, while the collar or ring R serves forpreventing the passage downward of any loose dirt or stone-d ust whichmay possibly sit't down through the soft porous sponge, cottonwaste,cotton cloth, or other material which may be in use. terial becomesdirty it can be removed through the opening S, and new or clean materialsupplied in its place.

In Fig. 3 ot' the drawings I have shown a plan whereby the chamber Q canbe cast upon the diaphragm or chute il', and also have shown that thecollar or ring R may be dispensed with. In this construction. as wellasin theplan shown by Fig. l, should the collar or ring R not be usedthe sponge or other trapping material, g, is sustained upon the bottomof the chamber. I however prefer to use both collars or rings, inasmuchas the sponge might have atendency to work down when the collar or ringIt is not Vhen the sponge or other niaused. I would also state that withmyinvention the use oi' the hood L may be dispensed with.

1t is found to be a very important matter to provide a means for keepingdust and dirt out of the journal-bearing and gearing below theCrusher-head. In factthe successful operation of stone breaking andcrushing machines depends in a very great degree upon the same, and Ibelieve my invention accomplishes that object.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination of the chamber Q, for containingsuitable material forarresting stone and ore dust, with the diaphragm' E ofthe frame, andwith shaft C, stone-Crusher above the chamber, and a step-bearing belowthe chamber, substantially as and for the purpose described.

2. The chamber Q, provided with an opening in its side, and an annularopening, q, in its bottom,in combination with the diaphragm E', havingtubular extension e, frame A, shaft C, loose colar or ring F, crusherabove the chamber, and oilstep-box below it, substantially as yand forthe purpose described.

3. The combination ot' the collar or ring R, trapping-chamber Q, collaror ring F, diaphragm or chute E', having tubular extension e, shaft U,with its erusher-head above the chamber, and the lower journal-bearingand gearing, substantially as and for the purpose described.

`RYERSON D. GATES.

